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https://github.com/netwide-assembler/nasm.git
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e6ee1a859b
This adds copyright verbiage to the Perl scripts. Scripts that are known to be clean w.r.t. the 2-clause BSD license are given that license; unclear ones are given the "LGPL for now". Signed-off-by: H. Peter Anvin <hpa@zytor.com>
240 lines
7.2 KiB
Perl
Executable File
240 lines
7.2 KiB
Perl
Executable File
#!/usr/bin/perl
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## --------------------------------------------------------------------------
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##
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## Copyright 1996-2009 The NASM Authors - All Rights Reserved
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## See the file AUTHORS included with the NASM distribution for
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## the specific copyright holders.
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##
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## Redistribution and use in source and binary forms, with or without
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## modification, are permitted provided that the following
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## conditions are met:
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##
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## * Redistributions of source code must retain the above copyright
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## notice, this list of conditions and the following disclaimer.
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## * Redistributions in binary form must reproduce the above
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## copyright notice, this list of conditions and the following
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## disclaimer in the documentation and/or other materials provided
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## with the distribution.
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##
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## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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## CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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## INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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## MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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## DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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## CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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## NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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## LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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## HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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## CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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## OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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## EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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##
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## --------------------------------------------------------------------------
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#
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# macros.pl produce macros.c from standard.mac
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#
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require 'phash.ph';
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require 'pptok.ph';
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use bytes;
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my $fname;
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my $line = 0;
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my $index = 0;
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my $tasm_count = 0;
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#
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# Print out a string as a character array
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#
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sub charcify(@) {
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my $l = '';
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my $c, $o;
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foreach $o (unpack("C*", join('',@_))) {
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$c = pack("C", $o);
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if ($o < 32 || $o > 126 || $c eq '"' || $c eq "\\") {
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$l .= sprintf("%3d,", $o);
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} else {
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$l .= "\'".$c."\',";
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}
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}
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return $l;
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}
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#
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# Generate macros.c
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#
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open(OUT,"> macros.c\0") or die "unable to open macros.c\n";
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print OUT "/*\n";
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print OUT " * Do not edit - this file auto-generated by macros.pl from:\n";
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print OUT " * ", join("\n * ", @ARGV), "\n";
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print OUT " */\n";
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print OUT "\n";
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print OUT "#include \"tables.h\"\n";
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print OUT "#include \"nasmlib.h\"\n";
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print OUT "#include \"hashtbl.h\"\n";
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print OUT "#include \"output/outform.h\"\n";
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print OUT "\n";
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print OUT "#if 1\n";
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print OUT "const unsigned char nasm_stdmac[] = {";
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my $npkg = 0;
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my @pkg_list = ();
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my %pkg_number = ();
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my $pkg;
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my @out_list = ();
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my $outfmt;
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my $lastname;
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my $z;
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foreach $fname ( @ARGV ) {
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open(INPUT,"< $fname\0") or die "$0: $fname: $!\n";
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while (<INPUT>) {
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$line++;
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chomp;
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while (/^(.*)\\$/) {
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$_ = $1;
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$_ .= <INPUT>;
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chomp;
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$line++;
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}
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if (m/^\s*\*END\*TASM\*MACROS\*\s*$/) {
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$tasm_count = $index;
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print OUT " /* End of TASM macros */\n";
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} elsif (m/^OUT:\s*(.*\S)\s*$/) {
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undef $pkg;
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my @out_alias = split(/\s+/, $1);
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printf OUT " /* %4d */ 0\n", $index++;
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print OUT "};\n#endif\n";
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$index = 0;
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print OUT "\n";
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my $pfx = '#if';
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foreach my $al (@out_alias) {
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print OUT $pfx, " defined(OF_\U${al}\E)";
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$pfx = ' ||';
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}
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printf OUT "\nconst unsigned char %s_stdmac[] = {\n", $out_alias[0];
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print OUT " /* From $fname */\n";
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$lastname = $fname;
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push(@out_list, $out_alias[0]);
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$out_index{$out_alias[0]} = $index;
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} elsif (m/^USE:\s*(\S+)\s*$/) {
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$pkg = $1;
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if (defined($pkg_number{$pkg})) {
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die "$0: $fname: duplicate package: $pkg\n";
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}
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printf OUT " /* %4d */ 0\n", $index++;
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print OUT "};\n#endif\n";
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$index = 0;
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print OUT "\n#if 1\n";
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printf OUT "static const unsigned char nasm_stdmac_%s[] = {\n", $pkg;
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print OUT " /* From $fname */\n";
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$lastname = $fname;
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push(@pkg_list, $pkg);
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$pkg_number{$pkg} = $npkg++;
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$z = pack("C", $pptok_hash{'%define'}+128)."__USE_\U$pkg\E__";
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printf OUT " /* %4d */ %s0,\n", $index, charcify($z);
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$index += length($z)+1;
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} elsif (m/^\s*((\s*([^\"\';\s]+|\"[^\"]*\"|\'[^\']*\'))*)\s*(;.*)?$/) {
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my $s1, $s2, $pd, $ws;
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$s1 = $1;
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$s2 = '';
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while ($s1 =~ /(\%[a-zA-Z_][a-zA-Z0-9_]*)((\s+)(.*)|)$/) {
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$s2 .= "$'";
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$pd = $1;
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$ws = $3;
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$s1 = $4;
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if (defined($pptok_hash{$pd}) &&
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$pptok_hash{$pd} <= 127) {
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$s2 .= pack("C", $pptok_hash{$pd}+128);
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} else {
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$s2 .= $pd.$ws;
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}
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}
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$s2 .= $s1;
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if (length($s2) > 0) {
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if ($lastname ne $fname) {
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print OUT "\n /* From $fname */\n";
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$lastname = $fname;
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}
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printf OUT " /* %4d */ %s0,\n",
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$index, charcify($s2);
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$index += length($s2)+1;
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}
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} else {
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die "$fname:$line: error unterminated quote";
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}
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}
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close(INPUT);
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}
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printf OUT " /* %4d */ 0\n};\n#endif\n\n", $index++;
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print OUT "const unsigned char * const nasm_stdmac_after_tasm = ",
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"&nasm_stdmac[$tasm_count];\n\n";
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my @hashinfo = gen_perfect_hash(\%pkg_number);
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if (!@hashinfo) {
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die "$0: no hash found\n";
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}
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# Paranoia...
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verify_hash_table(\%pkg_number, \@hashinfo);
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my ($n, $sv, $g) = @hashinfo;
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die if ($n & ($n-1));
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print OUT "const unsigned char *nasm_stdmac_find_package(const char *package)\n";
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print OUT "{\n";
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print OUT " static const struct {\n";
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print OUT " const char *package;\n";
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print OUT " const unsigned char *macros;\n";
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print OUT " } packages[$npkg] = {\n";
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foreach $pkg (@pkg_list) {
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printf OUT " { \"%s\", nasm_stdmac_%s },\n",
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$pkg, $pkg;
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}
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print OUT " };\n";
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# Put a large value in unused slots. This makes it extremely unlikely
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# that any combination that involves unused slot will pass the range test.
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# This speeds up rejection of unrecognized tokens, i.e. identifiers.
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print OUT "#define UNUSED 16383\n";
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print OUT " static const int16_t hash1[$n] = {\n";
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for ($i = 0; $i < $n; $i++) {
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my $h = ${$g}[$i*2+0];
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print OUT " ", defined($h) ? $h : 'UNUSED', ",\n";
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}
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print OUT " };\n";
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print OUT " static const int16_t hash2[$n] = {\n";
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for ($i = 0; $i < $n; $i++) {
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my $h = ${$g}[$i*2+1];
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print OUT " ", defined($h) ? $h : 'UNUSED', ",\n";
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}
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print OUT " };\n";
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print OUT " uint32_t k1, k2;\n";
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print OUT " uint64_t crc;\n";
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# For correct overflow behavior, "ix" should be unsigned of the same
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# width as the hash arrays.
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print OUT " uint16_t ix;\n";
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print OUT "\n";
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printf OUT " crc = crc64i(UINT64_C(0x%08x%08x), package);\n",
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$$sv[0], $$sv[1];
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print OUT " k1 = (uint32_t)crc;\n";
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print OUT " k2 = (uint32_t)(crc >> 32);\n";
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print OUT "\n";
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printf OUT " ix = hash1[k1 & 0x%x] + hash2[k2 & 0x%x];\n", $n-1, $n-1;
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printf OUT " if (ix >= %d)\n", scalar(@pkg_list);
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print OUT " return NULL;\n";
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print OUT "\n";
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print OUT " if (nasm_stricmp(packages[ix].package, package))\n";
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print OUT " return NULL;\n";
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print OUT "\n";
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print OUT " return packages[ix].macros;\n";
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print OUT "}\n";
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close(OUT);
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